Hi all, i'm newbie in linux, and i choose knoppix as my first linux. ([sorry for my bad english])

I've some troubles that i hope u help me to resolve...

I've installed knoppix 5.1 (dvd) on my hard disk (in a notebook dell), succesfull configured lan and wireless (!!!) and now i'm writing on knoppix...but...

1) when i try to open some kind of software (probably software that needed root privilegies) i receive an erro: "Su error for kde"...do u know what's the problem?! (for other softwares shows me to put root password, but other softwares show me this error)...


Thanks guys,